I decided I would replace my 1060 3GB with a 1070 to get better frame rates gaming. So I was just playing Fallout 4 and have the built-in FPS in steam enabled. Most places I get 60 fps (the refresh rate of my monitor) but in certain places downtown with a lot of stuff it will dip into the 40s and even high 30s. I thought perhaps my CPU was holding me back so I put CPUID HWMonitor up on my 2nd screen and my cpu utilization was maxing at between 65-70 percent during the low frame rates. My GPU was at 50ish. All temps are normal. So I'm not sure what the issue is? I will tell you, to change cards all I did was turn off the PC, pull my 1060 out put the 1070 in, booted and then updated to the latest Nvidia drivers. Fallout 4 was played with ultra settings @1080p. Asrock P67 Extreme 4 Gen3 3570k @ 4ghz 16 GB ram Crucial MX500 1TB SSD Seasonic 650 watt PS. blah, blah, blah.. Ideas?